Description These chair wheels are mainly made from plastic and nylon, and strong, feature stable bearing capacity. They are easy to install, no particular instruments need, pleasant to those that have little manual skills. The wheels solely produce low noise, appropriate for office use. Features -Color:As Shown -Material:PU, nylon -Size:8.10X5.50X5.50cm/3.18X2.16X2.16in -Stem Diameter: 7/16 inch (11mm) -Stem Length: 7/8 inch (22mm) - Smooth rotation: The chair wheels can be turned around freely with out obstacle, clean to move, providing you a gentle experience. - Wear resistance: These chair wheels have a good functionality in put on resistance, making them and long-lasting. - Stable stand: The area of between the wheel floor and the ground is large, and the load-bearing pressure is stronger, secure to use. - Easy to install: You simply need to push the stems of these chair wheels into your chair feet, tools needed. - Enough replacement: The replacement chair wheels can help your chair have a longer carrier life, no use to buy a new one.5 x chair wheels